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利用Ansys仿真软件,基于黏性流体的Navier-Stokes方程和k-ε双方程湍流模型,首次在热压耦合条件下建立真空管道交通系统三维数学模型及物理模型,对不同阻塞比条件下的真空管道系统运行进行数值仿真。结果表明:在列车速度和系统真空度一定的条件下,在温度场中,阻塞比越大,系统所产生的气动热越多,其增长趋势随阻塞比呈指数增长。在压力场中,随着阻塞比的增大,系统驻点处压力逐渐增大,但增长逐渐缓慢;涡街区域压力逐渐减小,且有加速减小趋势;列车首尾两端压差整体上呈线性递增趋势。
Based on the viscous fluid Navier-Stokes equation and the k-ε two-equation turbulence model, the three-dimensional mathematical model and physical model of the vacuum pipeline transportation system are established under the condition of thermo-compression coupling for the first time by Ansys simulation software. Pipeline system running numerical simulation. The results show that under the certain conditions of train speed and system vacuum, in the temperature field, the larger the blockage ratio, the more aerodynamic heat generated by the system, and the more the growth tendency increases exponentially with the blockage ratio. In the pressure field, with the increase of the blockage ratio, the pressure at the stagnation point of the system gradually increases, but the growth gradually slows down; the pressure in the vortex street decreases gradually and accelerates decreasing; the pressure drop at both ends of the train as a whole A linear trend of increasing.